Plaster ground



Sept. 2, 1924. 1,507,364

E. L. BENEDICT PLASTER GROUND Filed June 21, 1922 FIGJ and State of Pennsylvania,

Patented Sept. 2, i924.

'UTED STATES EDWARD L. BENEDICT, 0F SEWICKLEY, PENNSYLVANIA, ASSIGNOR TO' PITTSBURGH STEEL COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA.

isomer PATENT OFFICE.

rLAsTEa GROUND.

Application filed June 21, 1922. Serial-No. 569,784.

To all whom it may concern:

Be it known that I, EDWARD L. BENEDICT,

a citizen of the United States,

in the county of Allegheny have invented a of Sewickley,

and resident new and useful Improvement in. Plaster Grounds; and lowing to be a tion thereof.

I do hereby declare the folfull, clear, and exact descrip- My-invention relates to a plaster ground or backing for plaster or cement coated walls.

In an application filed by me on the 15th day of July,

1921, Serial No. 484,925, I have set forth and claimed a wire fabric composed of strand-wires and stay-wires nected at their points of intersections,

formed in said wires between the bends conand

points of intersection off-set from the plane of the fabric, with a perforated to sheet of building paper receive the said bends, and a retaining member of wire passing through the loops of said bends,

is held securely in p whereby the paper lace so that when said fabric is secured to the studding the plaster may be applied in the usual manner,

wire fabric acting to ter in place.

\Vhile the member,

the bindandhold the plasbendsv and the wire retaining as above set forth, will be on one side of the paper and will act as a binder for the plaster applied to that side, my present invention when used with the fabric of the above application will give increased holding capacity for The object the plaster.

of my invention is to provide a plaster ground or' backing for plaster or cement, coated walls, in which such a fabric as above described can be used for a solid partition where the wire employed on one side of the building paper,

and to these ends my perforating the paper so ter is applied to the backing at which th invention consists in that when the plasside of the ground or e wire mesh is located the plaster will pass through theperforations in the paper, and will form buttons or projections which, when the plaster hardens,

will form a roughened surface on that side of the backing or paper,

so that when the plaster is applied these buttons or projections will act to bind and lock the plaster securely in position tion wall. In the accompanyi to form a solid parting drawing, Fig. 1.is a

mesh is only tion on the line 8-8, Fig. 6.

I have illustrated my invention in connection with a wire fabric which forms the invention of the above-named application, although it is apparent that it is not limited to this particular form of construction.

The numeral 2 designates the strandwires and 3 the stay-wires, the strand wires having the bends 4 formed therein between the points of intersection, said bends passing through the openings 5 in the building paper 6. In order to hold the building paper in position the retaining wires 7 pass through the loops of said bends, and the ends of said retaining wires are bent, as at 8, around the marginal strand-wires.

The building paper 6 has the perforations 9 formed at suitable intervals through which the plaster passes when applied to one side of the backing, as will more fully hereinafter appear.

In making a solid partition, the ground or backing is connected to suitable studding which, in the present instance, is illustrated as consisting of the vertical channel-members 10 and any suitable means of securing the backing to said channels maybe employed. The plaster is first applied to that side of the ground or backing on which the wire fabric, composed of the strand-wires 2 and stay-wires 3, is located, and the plaster will be secured in place by the wire mesh, and will completely embedthe same and at the same time will pass through the perforations 9, as clearly indicated in Fig. 5, forming buttons or hook-like projections. plaster, being soft when applied, will naturally turn downwardly. As soon as the plaster hardens the plaster may then be applied to the opposite side of the backing, and these buttons or projections will act to bind and lock the plaster, and'the plaster is applied of such thickness as to completely embed'the studding, as shown in Fig. 8.

In this manner I provide a ground or The backing for plaster or cement coated walls in which it is only necessary to use the wire mesh on one side of the paper, thereby greatly reducing the cost, and by providing the paper with the perforations the plaster applied to one side acts also as a lock or bond for the plaster to be applied to the opposite side.

It is obvious that this ground or backing may be made up in sections in the factory for shipment to the point of use, or may be constructed at the point of use in the manner above set forth.

Where my invention is usedfor ceiling construction, when the plaster is applied it will pass through the perforations and form mushroom-like protuberances which will lock and hold the'plaster securely in place.

What I claim is:

A plaster ground or backing composed of strand wires and stay wires connected at their points of intersection, and rearwardly extending bends formed in said wires between the points of intersection in said frame or plane of the fabric, a substantially flat sheet of continuous surface material through which said bends extend, said sheet having perforations formed therein for the EDWARD L. BENEDICT. 

